Public and private.
Public means, it can be audited by everyone, this is amazingly secure as every user can verify their holdings without us knowing they are checking. They can then check the sum of all holdings and compare that to the blockchain to be sure Vaultoro is above 100% reserve.
Users Gold is secured by the Brinks Switzerland vaulting facility. Brinks Switzerland is privately audited.
We publish theBrinks Switzerland holdings statement viewable on the audit page (logged in). The statement is updated every week.